WO2023225936A1

WO2023225936A1 - Method and device for wireless communication

Info

Publication number: WO2023225936A1
Application number: PCT/CN2022/095232
Authority: WO
Inventors: 吕玲; 赵铮; 杨中志
Original assignee: 上海移远通信技术股份有限公司
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2023-11-30
Also published as: CN115316002A; US20230397045A1

Abstract

Provided in the present application are a method and device for wireless communication, providing a clear scheme for the selection of small data packets. The method comprises: a terminal device uses an SDT resource to send, to a network device, a first data packet in a data packet to be transmitted, the first data packet being determined on the basis of first information. The first information comprises one or more of the following information: the size of the data packet to be transmitted, the transmission delay allowed for the data packet to be transmitted, and the duration for which the data packet to be transmitted has waited.

Description

Wireless communication method and device

Technical field

The present application relates to the field of communication technology, and more specifically, to a wireless communication method and device.

Background technique

In order to save the signaling overhead of terminal equipment, the communication system allows terminal equipment to perform small data transmission (SDT) in the radio resource control (RRC) inactive (INACTIVE) state, that is, the terminal is allowed to Devices use SDT resources to transmit small data packets. However, the amount of data that SDT resources can carry is usually limited. If a terminal device has multiple data packets to be transmitted, there is currently no clear regulation on how the terminal device should select the data packets to be sent.

Contents of the invention

To address the above problems, this application provides a wireless communication method and device. Various aspects involved in the embodiments of this application are introduced below.

In a first aspect, a wireless communication method is provided, including: a terminal device using SDT resources to send a first data packet in a data packet to be transmitted to a network device, where the first data packet is determined based on first information; One piece of information includes one or more of the following information: the size of the data packet to be transmitted; the allowed transmission delay of the data packet to be transmitted; and the waiting time of the data packet to be transmitted.

In a second aspect, a wireless communication method is provided, including: a network device uses SDT resources to receive a first data packet in a data packet to be transmitted sent by a terminal device, where the first data packet is determined based on first information; The first information includes one or more of the following information: the size of the data packet to be transmitted; the allowed transmission delay of the data packet to be transmitted; and the waiting time of the data packet to be transmitted.

In a third aspect, a terminal device is provided, including: a sending unit configured to use SDT resources to send a first data packet in a data packet to be transmitted to a network device, where the first data packet is determined based on first information; The first information includes one or more of the following information: the size of the data packet to be transmitted; the allowed transmission delay of the data packet to be transmitted; and the waiting time of the data packet to be transmitted.

In a fourth aspect, a network device is provided, including: a receiving unit configured to use SDT resources to receive a first data packet in a data packet to be transmitted sent by a terminal device, where the first data packet is determined based on first information; The first information includes one or more of the following information: the size of the data packet to be transmitted; the allowed transmission delay of the data packet to be transmitted; and the waiting time of the data packet to be transmitted.

In a fifth aspect, a terminal device is provided, including a processor, a memory, and a communication interface. The memory is used to store one or more computer programs. The processor is used to call the computer program in the memory so that the terminal device The method described in the first aspect is performed.

A sixth aspect provides a network device, including a processor, a memory, and a communication interface. The memory is used to store one or more computer programs. The processor is used to call the computer program in the memory so that the network device Perform the method described in the second aspect.

In a seventh aspect, a device is provided, including a processor for calling a program from a memory to execute the method described in the first aspect.

In an eighth aspect, a device is provided, including a processor for calling a program from a memory to execute the method described in the second aspect.

In a ninth aspect, a chip is provided, including a processor for calling a program from a memory, so that a device equipped with the chip executes the method described in the first aspect.

In a tenth aspect, a chip is provided, including a processor for calling a program from a memory, so that a device installed with the chip executes the method described in the second aspect.

In an eleventh aspect, a computer-readable storage medium is provided, with a program stored thereon, and the program causes a computer to execute the method described in the first aspect.

In a twelfth aspect, a computer-readable storage medium is provided, with a program stored thereon, and the program causes the computer to execute the method described in the second aspect.

In a thirteenth aspect, a computer program product is provided, including a program that causes a computer to execute the method described in the first aspect.

A fourteenth aspect provides a computer program product, including a program that causes a computer to execute the method described in the second aspect.

In a fifteenth aspect, a computer program is provided, the computer program causing a computer to execute the method described in the first aspect.

In a sixteenth aspect, a computer program is provided, the computer program causing a computer to execute the method described in the second aspect.

In the embodiment of the present application, the terminal device can select the first data packet to send to the network device based on the first information, thereby clarifying the small data packet selection strategy and also contributing to the reasonable and maximized transmission of small data packets.

Description of the drawings

FIG. 1 is an example system architecture diagram of a communication system applicable to embodiments of the present application.

Figure 2 is a schematic flow chart of SDT based on a two-step random access process.

Figure 3 is a schematic flow chart of SDT based on a four-step random access process.

Figure 4 is a schematic flow chart of a wireless communication method provided by an embodiment of the present application.

Figure 5 is a schematic flow chart of a method for transmitting small data packets provided by an embodiment of the present application.

Figure 6 is a schematic flow chart of a method for transmitting small data packets provided by another embodiment of the present application.

Figure 7 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.

Figure 8 is a schematic structural diagram of a network device provided by an embodiment of the present application.

Figure 9 is a schematic structural diagram of a communication device provided by an embodiment of the present application.

Detailed ways

The technical solutions in this application will be described below with reference to the accompanying drawings.

Figure 1 is a wireless communication system 100 applied in the embodiment of the present application. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120 . The network device 110 may provide communication coverage for a specific geographical area and may communicate with terminal devices 120 located within the coverage area.

Figure 1 exemplarily shows one network device and two terminals. Optionally, the wireless communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. This application The embodiment does not limit this.

Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.

It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5th generation, 5G) systems or new radio (NR), long term evolution (long term evolution, LTE) systems , LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), etc. The technical solution provided by this application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication systems, and so on.

The terminal equipment in the embodiment of this application may also be called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT) ), remote station, remote terminal, mobile device, user terminal, terminal, wireless communications equipment, user agent or user device. The terminal device in the embodiment of the present application may be a device that provides voice and/or data connectivity to users, and may be used to connect people, things, and machines, such as handheld devices with wireless connection functions, vehicle-mounted devices, etc. The terminal device in the embodiment of the present application can be a mobile phone (mobile phone), a tablet computer (Pad), a notebook computer, a handheld computer, a mobile internet device (mobile internet device, MID), a wearable device, a virtual reality (virtual reality, VR) equipment, augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, smart Wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, etc. Optionally, the UE may be used to act as a base station. For example, a UE may act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc. For example, cell phones and cars use sidelink signals to communicate with each other. Cell phones and smart home devices communicate between each other without having to relay communication signals through base stations.

The network device in the embodiment of the present application may be a device used to communicate with a terminal device. The network device may also be called an access network device or a wireless access network device. For example, the network device may be a base station. The network device in the embodiment of this application may refer to a radio access network (radio access network, RAN) node (or device) that connects the terminal device to the wireless network. The base station can broadly cover various names as follows, or be replaced with the following names, such as: Node B (NodeB), evolved base station (evolved NodeB, eNB), next generation base station (next generation NodeB, gNB), relay station, Access point, transmission point (transmitting and receiving point, TRP), transmitting point (TP), main station MeNB, secondary station SeNB, multi-standard wireless (MSR) node, home base station, network controller, access node , wireless node, access point (AP), transmission node, transceiver node, base band unit (BBU), radio remote unit (Remote Radio Unit, RRU), active antenna unit (active antenna unit) , AAU), radio head (remote radio head, RRH), central unit (central unit, CU), distributed unit (distributed unit, DU), positioning node, etc. The base station may be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. A base station may also refer to a communication module, modem or chip used in the aforementioned equipment or devices. The base station can also be a mobile switching center and a device that undertakes base station functions in device-to-device D2D, vehicle-to-everything (V2X), machine-to-machine (M2M) communications, and in 6G networks. Network side equipment, equipment that assumes base station functions in future communication systems, etc. Base stations can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific equipment form used by the network equipment.

Base stations can be fixed or mobile. For example, a helicopter or drone may be configured to act as a mobile base station, and one or more cells may move based on the mobile base station's location. In other examples, a helicopter or drone may be configured to serve as a device that communicates with another base station.

In some deployments, the network device in the embodiment of this application may refer to a CU or a DU, or the network device includes a CU and a DU. gNB can also include AAU.

Network equipment and terminal equipment can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites in the sky. In the embodiments of this application, the scenarios in which network devices and terminal devices are located are not limited.

It should be understood that all or part of the functions of the communication device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).

Currently, the protocol defines three RRC states of terminal equipment: RRC connected (RRC_CONNECTED) state, RRC idle (RRC_IDLE) state, and RRC inactive (RRC_INACTIVE) state.

The RRC_CONNECTED state can refer to the state that the terminal device is in after completing the random access process and before RRC release is performed. There is an RRC connection between terminal equipment and network equipment (such as access network equipment). In the RRC_CONNECTED state, the terminal device can transmit data with the network device, such as downlink data transmission and/or uplink data transmission. Alternatively, the terminal device may also transmit terminal device-specific data channels and/or control channels with the network device to transmit specific information or unicast information of the terminal device.

The RRC_IDLE state refers to the state of the terminal device when it is camped in the cell but does not perform random access. The terminal device usually enters the RRC_IDLE state after powering on or after RRC is released. In the RRC_IDLE state, there is no RRC connection between the terminal device and the network device (such as the resident network device), the network device does not store the context of the terminal device, and no connection for the terminal device is established between the network device and the core network. If the terminal device needs to enter the RRC_CONNECTED state from the RRC_IDLE state, it needs to initiate the RRC connection establishment process.

The RRC_INACTIVE state is a newly introduced state from the perspective of energy saving in order to reduce air interface signaling, quickly restore wireless connections and quickly restore data services. The RRC_INACTIVE state is a state between the connected state and the idle state. The terminal device has entered the RRC_CONNECTED state before and then released the RRC connection, radio bearer and radio resources with the network device, but the network device saves the context of the terminal device to quickly restore the RRC connection. In addition, the connection established between the network equipment and the core network for the terminal equipment has not been released, that is to say, the user plane bearer and control plane bearer between the RAN and the CN are still maintained, that is, there is a CN-NR connection.

The terminal device can switch between the above three RRC states. For example, the terminal device can enter the RRC_INACTIVE state from the RRC_CONNECTED state to suspend its session when there is no data transmission for a period of time, and can enter the RRC_CONNECTED state from the RRC_INACTIVE state when there is a need for session transmission. In addition, the terminal device can also enter the RRC_IDLE state from the RRC_INACTIVE state or the RRC_CONNECTED state.

For terminal devices with infrequent data transmission, the terminal device can remain in the RRC_INACTIVE state to save power. Before version 16 (release 16, Rel-16), terminal devices in the RRC_INACTIVE state did not support data transmission, that is, they did not support the transmission of mobile origin (MO) data and mobile terminated (MT) data. MO data means that the sending end of the data is the terminal device, and the message transmission direction is from the terminal device to the network device. MO data can also be called uplink data. MT data means that the sending end of the data is the network device, and the message transmission direction is from the network device to the terminal device. MT data can also be called downlink data.

When MO data or MT data arrives, the terminal device needs to restore the RRC connection and enter the RRC_CONNECTED state. In the RRC_CONNECTED state, the terminal device can transmit MO data or MT data. After the MO data or MT data transmission is completed, the terminal device releases the RRC connection and returns to the RRC_INACTIVE state.

In the above process, the terminal device needs to switch from the RRC_INACTIVE state to the RRC_CONNECTED state, and then switch from the RRC_CONNECTED state to the RRC_INACTIVE state. Switching between different RRC states will cause the power consumption of the terminal device to increase. However, in some scenarios, the terminal device in the RRC_INACTIVE state needs to transmit some data with a small amount of data and low transmission frequency (which can be called small packet data). If the terminal device switches to the RRC_CONNECTED state and then transmits data, the signaling overhead required when the terminal device switches the RRC state will even be greater than the overhead required to transmit the data, resulting in unnecessary power consumption and signaling overhead.

The small data packets in the embodiment of the present application may be, for example, instant messaging messages, heartbeat packets, periodic data, etc. The embodiment of this application does not specifically limit the source of the small data packet. As an example, the small data packet may be data from a terminal device application (APP). For example, small data packets can be data from communication service APPs (such as WhatsApp, QQ, WeChat, etc.), heartbeat data packets from IM, email clients or other APPs, push notifications from various applications, etc. As another example, small packets can come from data from non-end device applications. For example, small data packets can come from data from wearable devices (such as regular positioning information, etc.), sensor data (such as temperature information and pressure information sent by industrial wireless sensors regularly or in an event-triggered manner), smart meters and smart meter network transmission protocols. Regular instrument readings specified in 3GPP TS 22.891, etc.

In order to reduce the power consumption of terminal equipment, the SDT scheme in RRC_INACTIVE state is discussed in Rel-17. In this solution, the terminal device does not need to switch from the RRC_INACTIVE state to the RRC_CONNECTED state for small data transmission, but can perform small data transmission in the RRC_INACTIVE state. The small data transmission in this embodiment of the present application may include uplink small data transmission and downlink small data transmission. The following will mainly describe uplink small data transmission.

In the RRC_INACTIVE state, the terminal device can perform SDT based on the resources configured by the network device. There are many ways for a terminal device to perform SDT, which are not specifically limited in the embodiments of this application. For example, the terminal device can perform SDT during random access. For another example, the terminal device can perform SDT based on configured grant (CG) resources. For another example, the terminal device can perform SDT based on the uplink preconfigured resource (pre-allocated uplink resource, PUR). These situations are introduced below.

The random access method can be a two-step random access process, or it can also be a four-step random access process. For the two-step random access process, the terminal device can perform SDT in message A (MSGA). That is, the MSGA of the two-step random access process can be used to carry data. For the four-step random access process, the terminal device can perform SDT in MSG3. In other words, MSG3 of the four-step random access process can be used to carry data.

During the random access process, the resources used by the terminal device to perform SDT may be called RA-SDT resources.

The following describes the two-step random access process and the four-step random access process respectively with reference to Figure 2 and Figure 3.

Figure 2 shows a schematic flow chart of SDT in a two-step random access process.

In step S210, the terminal device sends MSGA to the network device. The terminal device can send MSGA on the random access channel (RACH) resource configured by the network device. MSGA can carry data to be transmitted (also called uplink data or MO data). If MSGA is used for SDT, the resources that transmit MSGA can also be called RA-SDT resources. For example, the RA-SDT resource may be a RACH resource or a physical random access channel (physical random access channel, PRACH) resource.

In step S220, the network device sends MSGB to the terminal device. The MSGB may include a response to the data to be transmitted.

Figure 3 shows a schematic flow chart of SDT in a four-step random access process.

In step S310, the terminal device sends MSG1 to the network device. MSG1 carries the random access preamble.

In step S320, the network device sends MSG2 to the terminal device. This MSG2 can also be called a random access response (RAR). MSG2 may also include an uplink grant (UL grant), which is used to schedule the uplink resource indication of MSG3.

In step S330, the terminal device may send MSG3 to the network device on the uplink authorization scheduled by the network device. Among them, MSG3 carries the data to be transmitted. If MSG3 is used for SDT, the resources for transmitting MSG3 (that is, the uplink grant scheduled by the network device) can also be called RA-SDT resources.

In step S340, the network device sends MSG3 to the terminal device. The MSG3 may include a response to the data to be transmitted.

Configuration authorization can also be called upstream authorization-free. Configuration authorization can mean that the network device activates an uplink authorization to the terminal device. In the absence of receiving a deactivation instruction, the terminal device can always use the resources specified by the activated uplink authorization (i.e., CG resources) for uplink transmission. In this embodiment of the present application, the terminal device can use CG resources to perform SDT. CG resources used for SDT can also be called CG-SDT resources.

The type of configuration authorization can be, for example, CG type (type) 1 or CG type 2. The configuration parameters of CG type 1 can be configured by RRC through high-level signaling. The high-level signaling may be IE ConfiguredGrantConfig, for example. The parameters required for CG type 2 are also configured by IE ConfiguredGrantConfig, but the resources of CG type 2 need to be activated and deactivated by downlink control information (DCI) to indicate resource activation and deactivation. Only resources activated by DCI can be used.

CG type 1 and CG type 2 can be distinguished according to the field rrc-ConfiguredUplinkGrant in IE ConfiguredGrantConfig. If the field rrc-ConfiguredUplinkGrant is configured, the type of configuration authorization is CG type 1. If the field rrc-ConfiguredUplinkGrant is not configured, the type of configuration authorization is CG type 2.

In some embodiments, the terminal device can also use PUR resources to perform SDT. PUR resources are resources preconfigured for terminal devices to send uplink data in a non-connected state. The PUR resource can be a periodic resource. PUR resources can be pre-configured based on grant type 1. In the RRC_INACTIVE state, the terminal device can use the reserved PUR resources to directly transmit data.

Before the terminal device performs SDT, it needs to first determine whether the terminal device meets the conditions for triggering SDT. Only when the conditions for triggering SDT are met, the terminal device can perform SDT. If the conditions for triggering SDT are met, the terminal device can initiate the SDT process. If the conditions for triggering SDT are not met, the terminal device can initiate an RRC recovery (resume) process. For example, the terminal device can switch from the RRC_INACTIVE state to the RRC_CONNECTED state to transmit data.

The conditions for triggering SDT may include one or more of the following conditions: the data to be transmitted comes from a wireless bearer that can trigger SDT; the amount of data to be transmitted is less than the preconfigured data amount threshold (hereinafter also referred to as the third preset threshold) ;The measurement result of downlink reference signal receiving power (RSRP) is greater than the preconfigured RSRP threshold; there are valid SDT resources. The above conditions are introduced below.

In some embodiments, the conditions that trigger SDT are related to the radio bearer where the data to be transmitted is located. Embodiments of the present application can determine whether the terminal device meets the conditions for triggering SDT based on whether the data to be transmitted comes from a wireless bearer that can trigger SDT. If the data to be transmitted comes from a radio bearer that can trigger SDT, the terminal device meets the conditions for triggering SDT. If the data to be transmitted does not come from a radio bearer that can trigger SDT, the terminal device does not meet the conditions for triggering SDT. The radio bearer may be, for example, a signaling radio bearer (SRB) or a data radio bearer (DRB).

In other embodiments, the conditions for triggering SDT are related to the amount of data to be transmitted. If the amount of data to be transmitted is small, for example, the data to be transmitted is small packet data, the terminal device meets the conditions for triggering SDT. If the amount of data to be transmitted is large, the terminal device does not meet the conditions for triggering SDT. Embodiments of the present application can also determine whether the terminal device meets the conditions for triggering SDT by comparing the data volume of the data to be transmitted with the data volume threshold. If the amount of data to be transmitted is less than the data amount threshold, the terminal device meets the conditions for triggering SDT. If the amount of data to be transmitted is greater than or equal to the data amount threshold, the terminal device does not meet the conditions for triggering SDT. The data volume threshold can be preconfigured by the network device, or the data volume threshold can also be predefined in the protocol.

In other embodiments, the condition for triggering SDT is related to the measurement result of downlink RSRP. If the measurement result of downlink RSRP is greater than the RSRP threshold, it means that the signal quality is good, and the terminal device meets the conditions for triggering SDT. If the measurement result of downlink RSRP is less than or equal to the RSRP threshold, it means that the signal quality is poor, and the terminal device does not meet the conditions for triggering SDT. The RSRP threshold can be preconfigured on the network device or predefined in the protocol.

In other embodiments, the condition for triggering SDT is related to whether there are valid SDT resources. If there are valid SDT resources, the terminal device meets the conditions for triggering SDT, and the terminal device can use the valid SDT resources for data transmission. If there are no valid SDT resources, the terminal device does not meet the conditions for triggering SDT, and the terminal device has no available SDT resources for data transmission. The SDT resource may be the RA-SDT resource described above, and/or the CG-SDT resource.

If the terminal device is configured with RA-SDT resources and CG-SDT resources at the same time, when determining whether there are valid SDT resources, the terminal device can determine the RA-SDT resources and CG-SDT resources at the same time, or it can determine first Whether one of the SDT resources is valid, and then determine whether the other SDT resource is valid. For example, the terminal device can first determine whether there are valid RA-SDT resources, and then determine whether there are valid CG-SDT resources. For another example, the terminal device may first determine whether there are valid CG-SDT resources, and then determine whether there are valid RA-SDT resources. The following description takes an example in which the terminal device first determines whether there are valid CG-SDT resources and then determines whether there are valid RA-SDT resources.

In some embodiments, whether the CG-SDT resource is valid is related to whether there is a valid timing advance (TA). TA is related to the uplink synchronization of the terminal device. If TA is valid, it means that the terminal device is in the uplink synchronization state; if TA is invalid, it means that the terminal device is in the uplink out-of-synchronization state. The embodiment of the present application can determine whether the CG-SDT resource is valid by judging whether there is a valid TA. If there is a valid TA, it can mean that the CG-SDT resource is valid. If a valid TA does not exist, it may indicate that the CG-SDT resource is invalid.

Whether TA is valid is related to whether SDT's TA timer (TAT) is in running state. The network device can configure the TA timer for the terminal device, and the TA timer can be used by the terminal device to determine the length of uplink synchronization. If the TA timer is running, that is, the TA timer has not expired, it means that there is a valid TA. If the TA timer is not running, that is, the TA timer times out, it means that there is no valid TA.

The TA timer may be started after the terminal device receives an RRC connection release (release) message or the terminal device enters the RRC_INACTIVE state. The length of the TA timer can be configured by the network device to the terminal device. For example, after receiving the RRC connection release message sent by the network device, the terminal device can enter the RRC_INACTIVE state according to the indication information in the RRC connection release message. The RRC connection release message can also include the configuration information of the SDT-TA timer. The terminal device can start the SDT TA timer based on the configuration information of the SDT-TA timer.

As mentioned above, the terminal device can perform small data transmission on SDT resources (such as CG-SDT resources or RA-SDT resources or PUR resources). However, no matter what kind of SDT resource it is, the amount of data it can carry is limited. If the SDT resource cannot carry all the data packets to be transmitted in the terminal device, how should the terminal device choose the data packets to be sent? Currently, there is no Clear regulations.

Based on this, embodiments of the present application provide a wireless communication method and device, which provide a clear solution for selecting small data packets. The solution of the embodiment of the present application will be introduced in detail below with reference to Figure 4 .

As shown in Figure 4, in step S410, the terminal device uses SDT resources to send the first data packet in the data packet to be transmitted to the network device. Wherein, the first data packet is determined based on the first information. In other words, the terminal device may determine the first data packet to send to the network device based on the first information.

The data packets to be transmitted refer to the data packets that need to be sent from the terminal device to the network device. Multiple data packets to be transmitted may include small data packets or non-small data packets. Small data packets may refer to data packets whose data volume is less than or equal to a preconfigured data volume threshold (or the third preset threshold). Non-small data packets may refer to data packets whose data volume is greater than the third preset threshold.

The embodiment of this application does not specifically limit the type of channel used to transmit small data packets. For example, the channels used to transmit small data packets can be dedicated control channels (DCCH) and dedicated traffic channels (DTCH). Since SRB1 and SRB2 are transmitted in the DCCH and the DRB is transmitted in the DTCH, the small data packets in the embodiment of this application may come from one or more of SRB1, SRB2 and DRB. For another example, the channel used to transmit small data packets may be a common control channel (CCCH). Since SRBO is transmitted in the CCCH, the small data packets in the embodiment of the present application may come from SRBO.

Since DCCH and DTCH are related to the token bucket policy of the media access control (MAC) layer, the data flows carried in DCCH and DTCH will be diverted according to a certain token bucket policy. However, the CCCH only carries the SRB0 bearer and is only used in the random access process. Therefore, the CCCH does not involve the MAC layer token bucket algorithm, that is, the data in the CCCH has no relevant scheduling policy. Therefore, the solution of the embodiment of this application It is more suitable for scheduling data in CCCH.

The service types corresponding to the multiple data packets to be transmitted may be the same or different. For example, the plurality of data packets to be transmitted may include data packets of different service types. The service type of the data packet may include one or more of the following: enhanced mobile broadband (eMBB), ultra reliable low latency communication (URLLC), massive machine type communication,mMTC).

The first data packet may be determined based on the first information. The first information may include one or more of the following information: the size of the data packet to be transmitted, the allowed transmission delay of the data packet to be transmitted, and the waiting time of the data packet to be transmitted. The first data packet may be one data packet or multiple data packets, which is not specifically limited in the embodiments of this application.

In some embodiments, the first information may include the size of the data packet to be transmitted. The terminal device may select a first data packet from a plurality of data packets to be transmitted based on the size of the data packet to be transmitted. Since the smaller the size of the selected data packet is, the more data packets can be carried on the SDT resource. Therefore, in order to transmit more data packets, such as more service data packets, on the SDT resource, the terminal device can first Choose smaller data packets for transmission.

As an example, the terminal device can sort the data packets to be transmitted according to the size of the data packets, such as from large to small or from small to large. When selecting the first data packet, the terminal device can sort the data packets from the data packets. The smallest data packet is selected starting from the selected data packet until the sum of the selected data packets reaches the upper limit of SDT resources. In this case, the size of the first data packet may be less than or equal to the size of other data packets in the data packets to be transmitted except the first data packet. If the size of packet 1 is smaller than the size of packet 2, packet 1 can be scheduled before packet 2.

For example, if there are K data packets RB _i to be transmitted in the terminal device, the size of the K data packets to be transmitted is Li _, i=0,1,...,K-1. The terminal device can sort the data packets according to the size of _Li , such as L ₀ ≤ L ₁ ≤...≤L _K- ₁ . When selecting the first data packet, the terminal device can schedule the data packets in sequence according to the above order until the sum of scheduled data packets reaches the upper limit of the SDT resource, or in other words, until the remaining resources in the SDT resource cannot carry one data packet. until. For example, if L ₀ +L ₁ +L ₂ +L ₃ is smaller than the size of the SDT resource, and L ₀ +L ₁ +L ₂ +L ₃ +L ₄ is larger than the size of the SDT resource, it means that when selecting the data packet RB ₀ , After RB ₁ , RB ₂ , and RB ₃ , the remaining resources in the SDT resources are not enough to carry the data packet RB ₄ , so the terminal device can select the data packet RB ₀ , RB ₁ , RB ₂ , and RB ₃ as the first data packet.

As another example, the terminal device may select the first data packet based on whether the size of the data packet to be transmitted is less than a first preset threshold. The first preset threshold may be less than the third preset threshold, that is, the first preset threshold is less than the data amount threshold of the small data packet. The terminal device may use a data packet whose size is smaller than the first preset threshold as the first data packet. In other words, the size of the first data packet is smaller than the first preset threshold. If the first data packet includes multiple data packets, the sizes of the multiple data packets are smaller than the first preset threshold.

The first preset threshold may be predefined, or may be configured by the network device to the terminal device, or may be independently determined by the terminal device.

In some embodiments, the first information may include a transmission delay allowed for the data packet to be transmitted. The allowed transmission delay can be understood as the transmission delay requirement of the data packet. The terminal device may select the first data packet from multiple data packets to be transmitted based on the allowed transmission delay of the data packet to be transmitted. In order to ensure the transmission delay requirements of data packets, the terminal device can first select data packets with a lower allowed transmission delay for transmission.

As an example, the terminal device can sort the data packets to be transmitted according to the allowed transmission delay, such as from large to small or small to large. When selecting the first data packet, the terminal device can sort from The data packets with the lowest packet delay requirements are selected until the sum of selected data packets reaches the upper limit of SDT resources. In this case, the transmission delay allowed for the first data packet may be less than or equal to the transmission delay allowed for other data packets in the data packet to be transmitted except the first data packet. If the allowed transmission delay of data packet 1 is 1ms and the allowed transmission delay of data packet 2 is 0.5ms, since the allowed transmission delay of data packet 2 is less than the allowed transmission delay of data packet 1, data packet 2 can precede Packet 1 is scheduled.

For example, if there are K data packets RB _i to be transmitted in the terminal device, the size of the K data packets to be transmitted is _Li , and the allowed transmission delay of the K data packets to be transmitted is _Ti , i =0,1,…,K-1. The terminal device can sort the data packets according to the size of T _i , such as T ₀ ≤ _{T 1} ≤...≤T _K-1 . When selecting the first data packet, the terminal device can schedule the data packets in sequence according to the above order until the sum of scheduled data packets reaches the upper limit of the SDT resource, or in other words, until the remaining resources in the SDT resource cannot carry one data packet. until. For example, if L ₀ +L ₁ +L ₂ +L ₃ is smaller than the size of the SDT resource, and L ₀ +L ₁ +L ₂ +L ₃ +L ₄ is larger than the size of the SDT resource, it means that when selecting the data packet RB ₀ , After RB ₁ , RB ₂ , and RB ₃ , the remaining resources in the SDT resources are not enough to carry the data packet RB ₄ , so the terminal device can select the data packet RB ₀ , RB ₁ , RB ₂ , and RB ₃ as the first data packet.

As another example, the terminal device may select the first data packet based on whether the allowed transmission delay of the data packet to be transmitted is less than a fourth preset threshold. The terminal device may use a data packet whose allowed transmission delay is less than the fourth preset threshold as the first data packet. In other words, the allowed transmission delay of the first data packet is less than the fourth preset threshold. If the first data packet includes multiple data packets, the allowed transmission delays of the multiple data packets are all less than the fourth preset threshold.

The fourth preset threshold may be predefined, or may be configured by the network device to the terminal device, or may be determined independently by the terminal device.

In some embodiments, the first information may include the time that the data packet to be transmitted has been waiting. The terminal device may select the first data packet from multiple data packets to be transmitted based on the waiting time of the data packet to be transmitted. In order to enable data packets to be scheduled reasonably, the terminal device can first select data packets that have been waiting for a long time for transmission.

As an example, the terminal device can sort the data packets to be transmitted according to the waiting time, such as from large to small or small to large. When selecting the first data packet, the terminal device can sort the data packets from the data packets. The data packet that has been waiting for the longest time starts to be selected until the sum of the selected data packets reaches the upper limit of SDT resources. In this case, the time that the first data packet has been waiting may be greater than or equal to the time that other data packets in the data packets to be transmitted except the first data packet have been waiting. If the waiting time of data packet 1 is 0.5ms and the waiting time of data packet 2 is 0.3ms, since the waiting time of data packet 1 is greater than the waiting time of data packet 2, data packet 1 can precede data packet 2. be scheduled.

For example, if there are K data packets RB _i to be transmitted in the terminal device, the size of the K data packets to be transmitted is _Li , and the waiting time of the K data packets to be transmitted is Wi , _i = 0,1,…,K-1. The terminal device can sort the data packets according to the size of _Wi , such as W ₀ ≥ W ₁ ≥...≥W _K-1 . When selecting the first data packet, the terminal device can schedule the data packets in sequence according to the above order until the sum of scheduled data packets reaches the upper limit of the SDT resource, or in other words, until the remaining resources in the SDT resource cannot carry one data packet. until. For example, if L ₀ +L ₁ +L ₂ +L ₃ is smaller than the size of the SDT resource, and L ₀ +L ₁ +L ₂ +L ₃ +L ₄ is larger than the size of the SDT resource, it means that when selecting the data packet RB ₀ , After RB ₁ , RB ₂ , and RB ₃ , the remaining resources in the SDT resources are not enough to carry the data packet RB ₄ , so the terminal device can select the data packet RB ₀ , RB ₁ , RB ₂ , and RB ₃ as the first data packet.

As another example, the terminal device may select the first data packet based on whether the waiting time of the data packet to be transmitted is less than a fifth preset threshold. The terminal device may regard the data packet whose waiting time is less than the fifth preset threshold as the first data packet. In other words, the waiting time of the first data packet is less than the fifth preset threshold. If the first data packet includes multiple data packets, the waiting time of the multiple data packets is less than the fifth preset threshold.

The fifth preset threshold may be predefined, or may be configured by the network device to the terminal device, or may be independently determined by the terminal device.

In addition to the information described above, the first information may also include other information, such as quality of service (QoS) information, or QoS class identifier (QoS class identifier, QCI). QCI is a parameter used by the system to represent the transmission characteristics of business data packets. QCI can range from 1-9. QCI with different values correspond to different resource types, different priorities, different delays and different packet loss rates. In other words, the embodiment of the present application may also determine the first data packet based on one or more of the resource type for transmitting the data packet, the priority of the data packet, the delay of the data packet, and the packet loss rate of the data packet.

It can be understood that the above-mentioned first information can be implemented alone or in combination with each other, which is not specifically limited in the embodiments of the present application.

As an example, the first information may include the size of the data packet to be transmitted and the allowed transmission delay of the data packet to be transmitted. The terminal device may select the first data packet based on the size of the data packet to be transmitted and the allowed transmission delay of the data packet to be transmitted. The terminal device can select a data packet with a smaller data packet and a lower allowed transmission delay of the data packet as the first data packet, so that more data packets can be transmitted as much as possible while ensuring the data transmission delay requirement.

As another example, the first information may include the size of the data packet to be transmitted and the time that the data packet to be transmitted has been waiting. The terminal device may select the first data packet based on the size of the data packet to be transmitted and the waiting time of the data packet to be transmitted. The terminal device can select a data packet with a smaller data packet and a longer waiting time as the first data packet, so that the scheduling of data packets of different services can be balanced.

As yet another example, the first information may include the allowed delay of the data packet and the time the data packet has been waiting. The terminal device may select the first data packet based on the allowed delay of the data packet and the time the data packet has been waiting. The terminal device can select a data packet with a lower allowed transmission delay of the data packet and a longer waiting time of the data packet as the first data packet, so as to balance the scheduling of data packets of different services.

As yet another example, the first information may include the size of the data packet to be transmitted, the allowed transmission delay of the data packet to be transmitted, and the time the data packet to be transmitted has been waiting. The terminal device may select the first data packet based on the size of the data packet to be transmitted, the allowed transmission delay of the data packet to be transmitted, and the waiting time of the data packet to be transmitted. The terminal device can select a data packet with a smaller data packet, a lower allowed transmission delay of the data packet, and a longer waiting time of the data packet as the first data packet, so as to balance the scheduling of data packets of different services.

The method of determining the first data packet will be described below by taking the first information including the size of the data packet to be transmitted, the allowed transmission delay of the data packet to be transmitted, and the waiting time of the data packet to be transmitted as an example.

In some embodiments, the first parameter corresponding to the first data packet is less than or equal to the first parameter corresponding to other data packets in the plurality of data packets to be transmitted except the first data packet, wherein the first parameter is based on the first data packet. Information confirmed. In other words, the first data packet can be determined based on the first information. For example, the terminal device may determine a first parameter based on the first information, and then select a first data packet based on the first parameter.

The first parameter may satisfy one or more of the following conditions: the first parameter is proportional to the size of the data packet to be transmitted, the first parameter is proportional to the transmission delay allowed for the data packet to be transmitted, the first parameter is proportional to the transmission delay of the data packet to be transmitted, Inversely proportional to the time the packet has been waiting.

The first parameter is proportional to the data packet to be transmitted. It can mean that the smaller the data packet to be transmitted, the smaller the first parameter corresponding to the data packet is. The larger the data packet to be transmitted, the first parameter corresponding to the data packet is larger. The larger the parameter.

The first parameter is proportional to the transmission delay allowed for the data packet to be transmitted. It can mean that the smaller the transmission delay allowed for the data packet to be transmitted, the smaller the first parameter corresponding to the data packet is. The data packet to be transmitted allows The greater the transmission delay, the greater the first parameter corresponding to the data packet.

The first parameter is inversely proportional to the waiting time of the data packet to be transmitted. It can mean that the longer the waiting time of the data packet to be transmitted, the smaller the first parameter corresponding to the data packet is, and the shorter the waiting time of the data packet to be transmitted is. , the larger the first parameter corresponding to the data packet is.

When selecting the first data packet, the terminal device may select the first data packet based on the size of the first parameter. For example, the terminal device may select a data packet with a smaller first parameter as the first data packet. The terminal device can select starting from the data packet with the smallest first parameter until the upper limit of SDT resources is reached.

The embodiment of the present application does not specifically limit the calculation method of the first parameter, as long as the first parameter meets the above conditions.

For example, the first parameter can be expressed using the following formula:

Among them, K _i represents the first parameter corresponding to the i-th data packet, _Li represents the size of the i-th data packet, _Wi represents the waiting time for the i-th data packet, and _Ti represents the transmission of the i-th data packet. Delay, P represents weight, a and b are constants.

When selecting the first data packet, the terminal device may select the data packet with the smallest K _i as the first data packet. For example, the terminal device can choose

as the first packet.

In the above formula, the first parameter K _i is proportional to _Li and

Inversely proportional to

Inversely proportional. Therefore, the smaller L _i is, the smaller K _i is; the larger W _i is, the smaller K _i is; the smaller T _i is, the smaller K _i is.

In formula (1), the value of a may be W _max , where W _max represents the longest waiting time among the waiting times of multiple data packets to be transmitted. For example, among multiple data to be transmitted, data a has been waiting for the longest time, then the waiting time of data a can be regarded as W _max . The value of b may be T _min , which represents the minimum transmission delay among the allowed transmission delays of multiple data packets to _be transmitted. For example, among multiple data to be transmitted, the allowed transmission delay of data b is the smallest, then the allowed transmission delay of data b can be regarded as T _min . Therefore, formula (1) can be transformed into the following formula (2):

In the above formula, the first parameter K _i is proportional to _Li and

Inversely proportional to

Inversely proportional. use

and

As a variable, we can make

and

The value of is within a certain range to avoid extreme values in the calculated first parameter Ki.

In formulas (1) and (2), the weight P can adjust the impact of the allowed transmission delay of the data packet and the waiting time of the data packet on the first parameter K _i . The larger the P value is, the greater the impact of the allowed transmission delay of the data packet and the waiting time of the data packet on K _i ; the smaller the P value, the greater the impact of the allowed transmission delay of the data packet and the waiting time of the data packet on K i. The smaller the impact of _i .

The P value can be an integer or a fraction. For example, the P value can be greater than 1, or the P value can be less than 1, or the P value can be equal to 1. The P value may be predefined, configured by the network device to the terminal device, or determined independently by the terminal device. The P value can be flexibly adjusted according to actual needs. For example, if many data packets cannot be scheduled after timeout in the last scheduling, you can increase the P value in the next scheduling.

The above formulas are only examples and do not limit the solutions of the embodiments of the present application. For example, the first parameter can also be determined based on the following formula:

Among them, P1 represents the weight of the waiting time of the data packet, and P2 represents the weight of the allowed transmission delay of the data packet. The larger the value of P1, the greater the impact of the waiting time of the data packet on K _i ; the smaller the value of P1, the smaller the impact of the allowed transmission delay of the data packet on K _i .

In the RRC_INACTIVE state, when the terminal device's business data cannot be transmitted through an authorized resource block (TB burst), the remaining data volume can continue to be transmitted after the terminal device enters the RRC_CONNECTED state. Therefore, the embodiment of the present application can perform different scheduling on data packets of different sizes based on the size of the data packet.

In some embodiments, the embodiments of the present application may divide the data packets based on the size of the data packets. For example, a first preset threshold and a third preset threshold may be used to classify data packets into three levels. The first preset threshold is smaller than the third preset threshold. The third preset threshold is used to limit the maximum data packet that can be transmitted on the SDT resource.

If the size of the data packet is less than or equal to the first preset threshold, the data packet to be scheduled may be determined according to the size of the first parameter. For the calculation formula of the first parameter and the method of scheduling according to the first parameter, please refer to the previous description.

If the size of the data packet is greater than the first preset threshold and less than or equal to the third preset threshold, the transmission mode of the data packet may be determined based on the delay sensitivity of the data packet. If the data packet is not sensitive to delay, if the allowed transmission delay of the data packet is greater than the second preset threshold, the terminal device can cache the data packet, or the terminal device can remain in the RRC_INACTIVE state and wait for subsequent transmission opportunities to arrive. Transmit the packet. The subsequent transmission opportunity may be, for example, PUR resources in the next cycle or CG-SDT resources dynamically scheduled next time by the network device. If the data packet is sensitive to delay, if the allowed transmission delay of the data packet is less than or equal to the second preset threshold, the terminal device can enter the RRC_CONNECTED state and transmit the data packet according to the normal process.

If the size of the data packet is greater than the third preset threshold, no matter whether the data packet is sensitive to delay or not, the RRC recovery process can be started, and the terminal device enters the RRC_CONNECTED state and transmits the data packet according to the normal process.

The above SDT resources may be RA-SDT resources, CG-SDT resources, or PUR resources. When the terminal device transmits small data, it can use RA-SDT resources for small data transmission, CG-SDT resources for small data transmission, or PUR resources for small data transmission.

In some embodiments, if the terminal device has a valid TA, the terminal device can directly perform "dynamic scheduling-free" data transmission using PUR resources reserved by the network device, where the PUR resources are based on the first type of uplink grant (grant type). 1) Preconfigured. If the terminal device does not have a valid TA, the terminal device can perform random access first. After the random access is completed, the terminal device can receive parameters such as authorization instructions dynamically scheduled by the network device, and then can transmit small data packets based on the dynamically scheduled authorization. .

The following is an introduction to the process of small data transmission by terminal equipment based on Figure 5 and Figure 6.

Referring to Figure 5, SDT resources may be RA-SDT resources. RA-SDT resources can also become PRACH resources. The terminal device can send small data packets to the network device during the random access process.

In step S510, the terminal device sends MSGA to the network device. This MSGA can carry RRC recovery (resume) requests and small data packets. In other words, the terminal device can combine RRC resume signaling and small data packets and send them to the network device at the same time. This small data packet is an uplink data packet.

In step S520, the network device sends MSGB to the terminal device. The MSG B carries RRC conflict detection signaling and small data packets. In other words, the network device can combine the RRC conflict detection signaling and the small data packet and send them to the terminal device at the same time. This small data packet is a downlink data packet.

In some embodiments, the terminal device can perform small data transmission during both the random access process and the RRC recovery process. This allows the terminal device to transmit more small data in the RRC_INACTIVE state, thereby preventing the terminal device from frequently entering the RRC_CONNECTED state. , reduce signaling overhead.

In step S610, the terminal device sends MSGA to the network device. The MSGA can carry RRC recovery (resume) requests and small data packets. In other words, the terminal device can combine RRC resume signaling and small data packets and send them to the network device at the same time.

In step S620, the network device sends MSGB to the terminal device. The MSGB carries RRC conflict detection signaling and small data packets. In other words, the network device can combine the RRC conflict detection signaling and the small data packet and send them to the terminal device at the same time.

In step S630, after the random access is completed, the terminal device can initiate the RRC resume process. The terminal device can send small data packets and RRC resume signaling to the network device.

In step S640, after receiving the RRC resume signaling, the network device can dynamically schedule authorization parameters to the terminal device based on the identity (ID) information of the terminal device. For example, the network device can send a physical downlink control channel (physical uplink) to the terminal device. control channel, PDCCH), the PDCCH is used to indicate uplink authorization.

In step S650, the terminal device can transmit the small data packet on the uplink authorization.

In step S660, the terminal device releases the RRC connection, and the terminal device returns to the RRC_INACTIVE state.

When the network device determines that the terminal device is about to leave the RRC_CONNECTED state, it can send an RRC release message to the terminal device to instruct the terminal device to leave the RRC_CONNECTED state. Among them, the RRC release message can instruct the terminal device to enter the RRC_INACTIVE state or RRC_IDLE state. In the RRC_INACTIVE state, the terminal device can monitor short messages transmitted through DCI through the paging radio network temporary identifier (P-RNTI), using the 5G-serving-temporary mobile subscriber identity code (5G serving-temporary mobile subscription identifier, 5G-S-TMSI) monitors the CN paging channel and runs paging using the full inactive-radio network temporary identity (fullI-RNTI), performs neighbor cell measurements and cell ( re)select, periodically perform RAN-based notification area updates, and when moving outside the configured RAN-based notification area, obtain system information and can send scheduling request (SI) requests (if configured). In addition, the terminal device can also record available measurements and record the location and time of the measurement configuration UE.

When the terminal device is in the RRC_INACTIVE state, the terminal device retains the context of the last serving cell and allows the terminal device to move within a certain range without notifying the network device which cell it is in. The network side retains the next generation network (NG) interface connection and retains the non-access stratum (NAS) signaling connection with the UE. Therefore, the UE only needs to perform the resume process to restore the signaling bearer. and data bearer, and then data can be sent or received directly.

When the terminal device is in the RRC_INACTIVE state, if the last serving network device receives downlink (DL) data from the user plane function (UPF) or from the mobility management function (access and mobility management function) , AMF) DL signals (except UE release command and reset messages), or if the last serving NG-RAN site receives a UE release command message from AMF, it can reply with a UE context release complete message. The last gNB station that provides services to the end device maintains the context of the end device, and the end device is connected to the AMF and UPF.

The method embodiment of the present application is described in detail above with reference to FIGS. 1 to 6 , and the device embodiment of the present application is described in detail below with reference to FIGS. 7 to 9 . It should be understood that the description of the method embodiments corresponds to the description of the device embodiments. Therefore, the parts not described in detail can be referred to the previous method embodiments.

Figure 7 is a schematic structural diagram of a terminal device provided by an embodiment of the present application. The terminal device shown in Figure 7 can be any terminal device described above. The terminal device 700 includes a sending unit 710.

The sending unit 710 may be configured to use SDT resources to send the first data packet among the data packets to be transmitted to the network device, where the first data packet is determined based on the first information; the first information includes one or more of the following information: Type: the size of the data packet to be transmitted; the allowed transmission delay of the data packet to be transmitted; and the waiting time of the data packet to be transmitted.

In some embodiments, the first parameter corresponding to the first data packet is less than or equal to the first parameter corresponding to other data packets in the data packet to be transmitted except the first data packet, wherein, the The first parameter is determined based on the first information, and the first parameter satisfies one or more of the following conditions: the first parameter is proportional to the size of the data packet to be transmitted; the first parameter is proportional to the size of the data packet to be transmitted; The allowed transmission delay of the data packet is proportional to the first parameter and is inversely proportional to the waiting time of the data packet to be transmitted.

In some embodiments, the size of the first data packet is less than or equal to a first preset threshold, and the first preset threshold is less than a data amount threshold of a small data packet.

In some embodiments, the terminal device 700 further includes: a cache unit 720, configured to cache the second data packet if the allowed transmission delay of the second data packet in the data packet to be transmitted is greater than a second preset threshold. Two data packets, the size of the second data packet is greater than the first preset threshold.

In some embodiments, the SDT resources include one or more of the following resources: physical random access channel PRACH resources, configuration grant CG resources, and uplink preconfigured resources PUR.

Figure 8 is a schematic structural diagram of a network device provided by an embodiment of the present application. The network device shown in Figure 8 can be any of the network devices described above. The network device 800 includes a receiving unit 810.

The receiving unit 810 may be configured to use SDT resources to receive the first data packet among the data packets to be transmitted sent by the terminal device, where the first data packet is determined based on the first information; the first information includes one of the following information or Various: the size of the data packet to be transmitted; the allowed transmission delay of the data packet to be transmitted; the waiting time of the data packet to be transmitted.

Figure 9 is a schematic structural diagram of the device according to the embodiment of the present application. The dashed line in Figure 9 indicates that the unit or module is optional. The device 900 can be used to implement the method described in the above method embodiment. Device 900 may be a chip, terminal device or network device.

Apparatus 900 may include one or more processors 910. The processor 910 can support the device 900 to implement the method described in the foregoing method embodiments. The processor 910 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor can also be another general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), or an off-the-shelf programmable gate array (FPGA) Or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

Apparatus 900 may also include one or more memories 920. The memory 920 stores a program, which can be executed by the processor 910, so that the processor 910 executes the method described in the foregoing method embodiment. The memory 920 may be independent of the processor 910 or integrated in the processor 910 .

Apparatus 900 may also include a transceiver 930. Processor 910 may communicate with other devices or chips through transceiver 930. For example, the processor 910 can transmit and receive data with other devices or chips through the transceiver 930 .

An embodiment of the present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied in the terminal or network device provided by the embodiments of the present application, and the program causes the computer to execute the methods performed by the terminal or network device in various embodiments of the present application.

An embodiment of the present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied in the terminal or network device provided by the embodiments of the present application, and the program causes the computer to execute the methods performed by the terminal or network device in various embodiments of the present application.

An embodiment of the present application also provides a computer program. The computer program can be applied to the terminal or network device provided by the embodiments of the present application, and the computer program causes the computer to execute the methods performed by the terminal or network device in various embodiments of the present application.

It should be understood that in the embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean determining B only based on A. B can also be determined based on A and/or other information.

It should be understood that the term "and/or" in this article is only an association relationship describing related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, and A and B exist simultaneously. , there are three situations of B alone. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

It should be understood that in the various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server or data center integrated with one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs (DVD)) or semiconductor media (e.g., solid state disks (SSD) )wait.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A method of wireless communication, characterized by including:

The terminal device uses the small data transmission SDT resource to send the first data packet in the data packet to be transmitted to the network device, where the first data packet is determined based on the first information;

The first information includes one or more of the following information:

The size of the data packet to be transmitted;

The transmission delay allowed for the data packet to be transmitted;

The time the packet has been waiting for transmission.
The method according to claim 1, characterized in that the first parameter corresponding to the first data packet is less than or equal to the first parameter corresponding to other data packets in the data packet to be transmitted except the first data packet. One parameter,

Wherein, the first parameter is determined based on the first information, and the first parameter meets one or more of the following conditions:

The first parameter is proportional to the size of the data packet to be transmitted;

The first parameter is proportional to the allowed transmission delay of the data packet to be transmitted;

The first parameter is inversely proportional to the time the data packet to be transmitted has been waiting.
The method according to claim 1 or 2, characterized in that the size of the first data packet is less than or equal to a first preset threshold, and the first preset threshold is less than a data amount threshold of a small data packet.
The method of claim 3, further comprising:

If the allowed transmission delay of the second data packet in the data packet to be transmitted is greater than the second preset threshold, the terminal device caches the second data packet, and the size of the second data packet is greater than the second data packet. a preset threshold.
The method according to any one of claims 1-4, characterized in that the SDT resources include one or more of the following resources: physical random access channel PRACH resources, configuration authorization CG resources, uplink pre-configuration Resource PUR.
A method of wireless communication, characterized by including:

The network device uses the small data transmission SDT resource to receive the first data packet among the data packets to be transmitted sent by the terminal device, where the first data packet is determined based on the first information;

The first information includes one or more of the following information:

The size of the data packet to be transmitted;

The transmission delay allowed for the data packet to be transmitted;

The time the packet has been waiting for transmission.
The method of claim 6, wherein the first parameter corresponding to the first data packet is less than or equal to the first parameter corresponding to other data packets in the data packet to be transmitted except the first data packet. One parameter,

Wherein, the first parameter is determined based on the first information, and the first parameter meets one or more of the following conditions:

The first parameter is proportional to the size of the data packet to be transmitted;

The first parameter is proportional to the allowed transmission delay of the data packet to be transmitted;

The first parameter is inversely proportional to the time the data packet to be transmitted has been waiting.
The method according to claim 6 or 7, characterized in that the size of the first data packet is less than or equal to a first preset threshold, and the first preset threshold is less than a data amount threshold of a small data packet.
The method according to any one of claims 6-8, characterized in that the SDT resources include one or more of the following resources: physical random access channel PRACH resources, configuration authorization CG resources, uplink pre-configuration Resource PUR.
A terminal device, characterized by including:

A sending unit configured to use small data transmission SDT resources to send the first data packet in the data packets to be transmitted to the network device, where the first data packet is determined based on the first information;

The first information includes one or more of the following information:

The size of the data packet to be transmitted;

The transmission delay allowed for the data packet to be transmitted;

The time the packet has been waiting for transmission.
The terminal device according to claim 10, characterized in that the first parameter corresponding to the first data packet is less than or equal to the first parameter corresponding to other data packets in the data packet to be transmitted except the first data packet. The first parameter,

Wherein, the first parameter is determined based on the first information, and the first parameter meets one or more of the following conditions:

The first parameter is proportional to the size of the data packet to be transmitted;

The first parameter is proportional to the allowed transmission delay of the data packet to be transmitted;

The first parameter is inversely proportional to the time the data packet to be transmitted has been waiting.
The terminal device according to claim 10 or 11, wherein the size of the first data packet is less than or equal to a first preset threshold, and the first preset threshold is less than a data amount threshold of a small data packet.
The terminal device according to claim 12, characterized in that the terminal device further includes:

A cache unit configured to cache the second data packet if the allowed transmission delay of the second data packet in the data packet to be transmitted is greater than a second preset threshold, and the size of the second data packet is greater than the second data packet. The first preset threshold.
The terminal device according to any one of claims 10-13, characterized in that the SDT resources include one or more of the following resources: physical random access channel PRACH resources, configuration authorization CG resources, uplink reservation Configure resource PUR.
A network device, characterized by including:

A receiving unit configured to use small data transmission SDT resources to receive the first data packet among the data packets to be transmitted sent by the terminal device, where the first data packet is determined based on the first information;

The first information includes one or more of the following information:

The size of the data packet to be transmitted;

The transmission delay allowed for the data packet to be transmitted;

The time the packet has been waiting for transmission.
The network device according to claim 15, wherein the first parameter corresponding to the first data packet is less than or equal to the first parameter corresponding to other data packets in the data packet to be transmitted except the first data packet. The first parameter,

Wherein, the first parameter is determined based on the first information, and the first parameter meets one or more of the following conditions:

The first parameter is proportional to the size of the data packet to be transmitted;

The first parameter is proportional to the allowed transmission delay of the data packet to be transmitted;

The first parameter is inversely proportional to the time the data packet to be transmitted has been waiting.
The network device according to claim 15 or 16, characterized in that the size of the first data packet is less than or equal to a first preset threshold, and the first preset threshold is less than a data amount threshold of a small data packet.
The network device according to any one of claims 15-17, characterized in that the SDT resources include one or more of the following resources: physical random access channel PRACH resources, configuration authorization CG resources, uplink reservation Configure resource PUR.
A terminal device, characterized in that it includes a memory, a processor and a communication interface, the memory is used to store programs, and the processor is used to call the program in the memory, so that the terminal device executes the instructions of claim 1- The method described in any one of 5.
A network device, characterized in that it includes a memory, a processor and a communication interface, the memory is used to store programs, and the processor is used to call the program in the memory, so that the network device executes the steps as claimed in claim 6- The method described in any one of 9.
A device, characterized in that it includes a processor for calling a program from a memory to execute the method according to any one of claims 1-5.
A device, characterized in that it includes a processor for calling a program from a memory to execute the method according to any one of claims 6-9.
A chip, characterized in that it includes a processor for calling a program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1-5.
A chip, characterized in that it includes a processor for calling a program from a memory, so that a device installed with the chip executes the method according to any one of claims 6-9.
A computer-readable storage medium, characterized in that a program is stored thereon, and the program causes the computer to execute the method according to any one of claims 1-5.
A computer-readable storage medium, characterized in that a program is stored thereon, and the program causes the computer to execute the method according to any one of claims 6-9.
A computer program product, characterized by comprising a program that causes a computer to execute the method according to any one of claims 1-5.
A computer program product, characterized by comprising a program that causes a computer to execute the method according to any one of claims 6-9.
A computer program, characterized in that the computer program causes the computer to perform the method according to any one of claims 1-5.
A computer program, characterized in that the computer program causes the computer to perform the method according to any one of claims 6-9.